Envelop



-O. G. KLEIN.

ENVELOP.

APPLICATION FILED IuNE Il 1920.

Patented Dec. 27, 1921.

--T J l I N VEN TOR.

770 .ff/E//I/ v By ATTORNEY.

omo e. KLEIN, `or SIE.

GENEVIEVE, MISSOURI.

Y nivvnnor;

To all to 710m` it may conce/m.'

Be it known that I, 'r'rol G. KLnrN, a

ent whereby correspondence with Inailv order houses, etc., may bemore conveniently carried on. Y I

The invention further contemplates the provision of a mailing medium in thev character of double envelop forming blanks which can be readily folded into the desired form to provide a safe and secure envelop for letters, etc., which can be' mailed, ysealed orunsealed as desired. g l

In additionl the invention also contemplatesl the provision of means for enabling a duplex venvelop to be cut and folded lfrom a single blank in such a form and shape as toprovide a mailing medium having practically the same characteristics of an ordinary business letterv envelop but yet at the same time being capable of greater use and for many and variant purposes.

`With the above' and other objects which will appear as the ydescription proceeds, the invention may be said to reside generally in the details of construction, combination and arrangement of `parts as will be hereinafter more fully pointed out, refi erence being had to the accompanying drawings wherein- Figure lis a side elevation of the improved envelop when completely folded and ready for mailing.

Fig'. Qisa' similar view, the closing flap of the envelop being open to` admit the insertion of a letter within the envelop.

VFig. 3 is avertical cross sectional view thereof taken on the line 3-3 of Fig. 2 and Fig. 4l is a plan view of the blank or wrapper prior to its being folded to form the envelop herein contemplated.

It is the purpose of the present invention, in providing a duplex envelop of the character here illustrated, to produce an article which can be conveniently used by vdrug or chemical companies and in fact any Specification of Lettersatent. vPamgnjfed De@ 27192L applicati@ mea :rune 1, 1920. serial no. 385,665. l l

mail 'order` concerns lwhere dealings' with customers are naturally carried on by cor,- respondence, and 1t aims to provide an errvelop which can be used by such 4firms in the same-manner asthe ordinaryfbusiness'Y envelop but which will atthe same time sov With this end in view the-envelop is'vformed 'Y primarily 'from a 'blank 1 designed to be substantially rectangular throughout,z its major portion. and terminatingV in approxi-- mately triangular ends and side flaps as-will be hereinafter more particularly .pointed out.` The rectangular portion of the wrapperis preferably spaced off evenly intol three sections or parts to provide upper, intermediate and lower sections designated at 2, 3 and 4L respectively, each ofwhichV is delined `by the dotted line structure extending transversely of the wrapper as shown to advantage in Fig. ,4: of the drawing. `The, middle or Yintermediate section 3I isl provided with vintegrally `formed sideflaps 5, preferablytriangular as .shown and in the nature ofthe side'flap's of the ordinary envelop. VThis section is also `providedwith a triangular row of perforations @leading inwardly from the yoppositelower `corners of the section S-fand spaced from the lower edges of the flaps 5 when VVJthe latter are folded inwardly thus providing Van outer andinner envelop. The lowermost section 4 is likewise provided" with alpair of side Haps, these flaps however, as shown at 7,

being of a different design thanaps' and with a bottom flap8 and at' the other end Afterl having been cut to the shape as thus described, lthe blank. would ordinarily be rprovided withvgummed edges as lindicated at 8 and l0- respectively and the side flaps 7 would likewise be-.gummed as at 11, such flaps however being; gummed only along the undercut edges and uponl thesurface `with the closureor sealing flap 9, thisflap `being providedv witha tongue or tab 1 0.

til

uppermost when folded inwardly. lt may be noted from a consideration of 4 of the drawings that the lower half of the blank is thus practically a duplicate of the ordinary blank from which the usual and ordinary mailing envelop is folded since thegseetion 4 may be termed the front'fof the envelop which will be formed ,upon folding the Hap 8 inwardly over the in turned flaps 7 to which may be glued the closingffl'ap of the envelop being provided by the triangular portion 12 inwardly of- Ytwo separate and distinct envelops which may be 'detached one from the other without infipairing` the utility of one of them.

In using the envelop as contemplated herein, the side flaps 7 are first folded over to the position assumed inv Fig. 4 and 'the bottom flap 8 is then folded over until the gummed edges 11 and 8 contact and cause the aps to `adhere 'to one Aanother to provide a bot-- tom pocket'y or envelop in which a letter, card or other matter may be inserted if desired. This may, however, be left empty as it constitutes the return envelop to be used by 'the consumer in corresponding Vwith theV person or firmwhose name and address, etc., may be printed upon that surface of section 4 which constitutes the front vof the envelop. Before the fi'aps`5 are folded inwardly as shown in the drawing, the pocket or envelop bearing section 4 is 'folded inwardly along the dotted line 13 so as to lie against section 3 subsequent fto which'the flaps 5 mayA then be lfolded inwardly so as to lie outside of the envelop. Sections 3 and^4 are then folded along dotted line 14 so as to lie against sec tion 2 in which event the blank assumes the shape illustrated in Fig. 2 of the drawing. 1f it is desired that the matter contained within the venvelop when transmitted to a customer be sealed, the Hap 5 which rests up against the section 2 should ordinarily 'iaverbeen provided with gummed surfaces so as to adhere tofthe inner face of the section 2y thus providing a space 16 between the section 2 and the inner opposing section 4,' into Vwhich the letter, etc., Vmay be inserted 'as into any envelop. rlC-he customers return envelop, indicated at 15, forms the outermost fold of the envelop and the flap 12 thereof is adapted to be covered when the flap 9 of the inner envelop is folded over and sealed, iit being noted that the gummed edge 10 :lies outside of or spaced off from the flap portion 12 as defined by the perforations 6.

Vlhe `object of this is to yprevent the tearing a ,eel ,me

open of the sealed tlap 9 from mutilating or in any wise injuring the customers return envelop. The folding .over and sealing of the flap 9 completes the envelop and provides a sealed package or envelop which vcan be stamped and deposited 1n the mail.

A`within the main envelop ltmerely by drawing out one of the turned in flaps 5 and withdrawing the letter', etc." It is also obvious that other arrangements may be effected when vit is desired to adapt the envelop for mailing packages without sealing and may be done in various ways, such as by slitting the section 3 just above the flap portions 12 so that the tongue 10 may be inserted there through when the flap 9 is folded over; or any other suitable fastening means maybe employed, the idea being that the customer upon receiving the envelop can uri-fasten it and unfold the wrapper to reach the vendors message therein and to tear 0H the return envelop 15 along the perforations 6, which envelop can be used for mailing the reply. VJ hen the envelop comes sealed the V.saine may be torn open by ripping it across the upper end of the sealed flap portion 9.

From the above it will be `seen that this invention provides a wrapper-which can be folded to provide a double envelop structure in which separate and distinct messageslcan he deposited, one of `which envelops may be employed as a return envelop for transmit,- ting a reply. lt is also to be understood that various changes and modifications may be resorted to in the practical application of the invention, provided Aall such modifications and alterations that are found necessary-are properly within the scope and spirit of the invention defined in the appended claims,

Having thus described the invention what l claim as new and desire to secure 'by YLetters Patent is zV Y 1. A duplex envelop including an upper, an intermediate and a lower section, a sealing fla-p at the end of said upper and lower sections, side flaps extending from said lower and intermediate sections, said lower section being separated from said intermediate section by a row of perforations which extend inwardly from opposite corners 'of said lower section to form an inner Venvelop and whereby theseparation of said lower section from said intermediate section is facilitated.

2. A duplex `envelop including a blank, having` inner and outer envelops detachably united, said inner envelop being foldable upon the rear wall of the outer envelop, side flaps carried by said outer envelop and having Van adhesive .applied thereto whereby said flaps may adhere to the inner surface of the front wall of the outer envelop to form a pocket," Asaid outer envelop having a sealing iiap adapted to be connected to the rear wall of the youter envelop to inclose the inner envelop. l

3. A. lduplex envelop including a blank consisting of upper, intermediate and lower Wall sections, said lower section being provided with flaps to constitute an inner envelop, the intermediate section being provided with side flaps foldable upon the inner envelop and inside of the outer envelop, said intermediate and lower wall sections being foldable upon the upper Wall section, and a sealing flap carried by the upper wall section for sealing the outer envelop.

4. A mailing device comprising a rectangular blank having an end iap at each end and divided into three sections, the intermediate section being4 provided with a row of perforations dividing the strip into upper and lower envelop portions, side flaps carried by the perforated settion and adapted when folded in to coaot with the uppermost section so as to provide one envelop and side flaps carried by the lowermost section and adapted to coperate with the lower end flap to provide the other envelop. 

